431
FNUS75 KMSO 291022
FWSMSO
SPOT FORECAST FOR SAWMILL PETTY 930
NATIONAL WEATHER SERVICE MISSOULA MT
422 AM MDT WED OCT 29 2025
FORECAST IS BASED ON IGNITION TIME OF 0700 MDT ON OCTOBER 29.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
A SHORTWAVE AND ASSOCIATED COLD FRONT MOVING
THROUGH THE REGION TODAY CAUSING A SUDDEN INCREASE IN THE WINDS
THIS MORNING AROUND 0800 OR 0900. VERY LITTLE PRECIPITATION IS
EXPECTED WITH THIS FRONT, BUT SMOKE VENTILATION WILL BE VERY GOOD
TODAY. THE RIDGE BECOMES DOMINANT AGAIN TOMORROW AND SMOKE
VENTILATION WILL DECREASE AGAIN.
ANOTHER ATMOSPHERIC RIVER IS FORECAST FOR THIS WEEKEND, THOUGH THE
FIRE AREA WON'T BE UNDER THE HEAVIEST PRECIPITATION. THERE IS A
55% CHANCE OF A WETTING RAIN SATURDAY NIGHT AND 90% CHANCE FOR
THE BURN SITE TO RECEIVE 0.10 INCHES OR MORE OF RAIN BY NEXT
MONDAY MORNING.
REST OF TODAY
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN LIKELY IN THE MORNING.
* CWR (> 0.10 INCH)...10 PERCENT.
* CHANCE LIGHTNING....0 PERCENT.
* MAX TEMPERATURE.....44-49.
* MIN HUMIDITY........55-60 PERCENT.
* WIND (20 FT)........WEST 7-11 MPH WITH GUSTS 25-30 MPH THIS
MORNING THEN DECREASING TO GUSTS 20-25 MPH AFTER NOON.
* MIXING HEIGHT.......3500 FT AGL INCREASING TO 5000 FT AGL IN THE
AFTERNOON.
* MIXING WINDS........WEST 20 MPH.
* PRECIP AMOUNT.......0.03 INCHES.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* CWR (> 0.10 INCH)...0 PERCENT.
* CHANCE LIGHTNING....0 PERCENT.
* MIN TEMPERATURE.....25-30.
* MAX HUMIDITY........79-84 PERCENT.
* WIND (20 FT)........SOUTHWEST 5-6 MPH IN THE EVENING BECOMING
VARIABLE 2-4 MPH.
* MIXING HEIGHT.......1000 FT AGL.
* MIXING WINDS........SOUTHWEST 10 MPH.
* PRECIP AMOUNT.......0.00 INCHES.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* CWR (> 0.10 INCH)...0 PERCENT.
* CHANCE LIGHTNING....0 PERCENT.
* MAX TEMPERATURE.....44-49.
* MIN HUMIDITY........45-50 PERCENT.
* WIND (20 FT)........VARIABLE 1-3 MPH.
* MIXING HEIGHT.......3000 FT AGL.
* MIXING WINDS........SOUTH 5 MPH.
* PRECIP AMOUNT.......0.00 INCHES.
FORECASTER...LEACH
REQUESTED BY...JULIAN WEARING
TYPE OF REQUEST...PRESCRIBED
.TAG 2524654.0/MSO
.DELDT 10/29/25
.FORMATTERVERSION 2.0.0
.EMAIL JULIAN.WEARING@USDA.GOV
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